Hyundai Elantra (CN7): Integrated Body Control Unit (IBU) / Repair procedures

Hyundai Elantra (CN7) 2021-2025 Service Manual / Body Electrical System / Integrated Body Control Unit (IBU) / Repair procedures

Removal
1.
Disconnect the negative (-) battery terminal.
2.
Remove the glove box housing cover.
(Refer to Body - "Glove Box Housing Cover")
3.
Remove the IBU unit (A) after loosening mounting nuts.

4.
Remove the IBU after disconnecting IBU connectors.

Installation
1.
Connect the integrated body control module connector.
2.
Install the integrated body control module.
3.
Install the glove box housing cover.
4.
Connect the negative (-) battery terminal.
Diagnosis With Diagnostic tool
1.
In the body electrical system, failure can be quickly diagnosed by using the vehicle diagnostic system (Diagnostic tool).
(1)
Fault Code Searching : Checking failure and code number (DTC)
(2)
Data Analysis : Checking the system input/output data state
(3)
Actuation test : Checking the system operation condition
(4)
S/W Management : Controlling other features including system option setting and zero point adjustment
2.
If diagnose the vehicle by Diagnostic tool, select "DTC Analysis" and "Vehicle".

3.
If check current status, select the "Data Analysis" and "Car model".

4.
Select the 'IBU_BCM' to search the current state of the input/output data.

    Circuit DiagramWith Smart KeyWithout Smart Key

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